Lathe.



R. C. PAY.'

LATHE.

APPLIOATION FILED FEB. 9, 1906.

Patentd Ja,n19, 1909.

vw/vra@ www 6.

v R. C. PAY.

LATER:

APPLICATION FILED TBB. 9, 1906. 910,466. l Patented Jan. 19, 1909.

6 SHEETS-SHEET 2.

R. C. PAY.

LATHE. APPLIGATION FILED 113.9, 1906.

Patented t1311.19, 1909.A

5 SHEETS-SHEET 3.

m2 v2 mm, v.

I.. .II-l" l wm 5.2.

R. 0. PAY. LATHB. APPLICATION FILED FEB. 9, 1906.

910,466. Patented Jan. 19, 1909.

5 SHEETS-SHEET 4.

WITNESSES: v *TQ-a /lwE/vo/i #JW 'i m www c: @l @ma A Br A TTU/$175259.

`R C. PAY. LATHE. APPLIoATIoN FILED PEB. 9, 1906. Y

Patented Jan. 19, 1909. 5 SHEETS-SHEET 5.

/NVENTOR m. S o E W W /M Q WQ.

, work or: blanks to be treated are prefenably will be described.

uNrTED s'mrns PATENT cerros- RIMMoN c. FAY, 'oF PniLADELPHiA, rENNsYLvANn, AssleNoR 'To FAY 'MACHINE' COMPANY, A eoRroRATIoN oF- PENNSYLVANIA.

LATE.

To all 'whom 'it may camera:

Be it .known that I, RIM-MON C. Fnsi, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Lathes, of which the following is a specification.

The invention to be hereinafter described relates to machine tools and more particularly to that type known as lathes, wherein the rotated, while the cutting instrumentalities are held yand fed to their cutting position by -suitable tool holders.

The general obiects of the present invention are to provi ea machine 'of the above character which 'will embody a simplified form of mechanism for simultaneously performing a multiplicity of operations on the same blank, wherein the speed of the parts may be either manuell or 4automatically controlled, and the machine be automatically or manually stopped whenthe article being treated is iinished, thus after the machine, has been adjusted tothe performance of certain work, no further attention is required of the operative than the proper supply of blanks. l l

With these generally stated objects in view, the invention consists of the parts and combinations ashereinafter described and d enitely pointed out the claims.

In the embodiment of the invention herein' selected for illustration the machine is provided with a series-of cutting instrumentalities for simultaneously actin upon the article to be treated, the carriersfor such cutting instrumentalities being operated or fed by cam devices which derive their motion from the drivingshaft thro h. a suitable train of' gearing, The generalorm and character of the said cam devices is such that one rotation thereof is sufficient to carry the cutting tools simultaneously through a complete cycleof their cutting operation, whereupon the` parts may be automaically returned to their starting position. fora fresh cut, all as In the drawings Figure 1 is a side elevation of a lathe embodylng one form of the present .inventioni L Fig. 2 is a side elevation similar to that of Fig. l taken from the opposite side of the machine. Fig. 3 is a longitul mechanical disposition of parts'.

, tot allow latitude in speed and yet per-mit their .read

dinal central section ef the machine, some of 'the parts bei-ng broken awa-y and others shown in elevation to :better-.illustratethe Fig. is a transverse sectlon -nl the line -1:-:t ,l Figi. A2. Fig. 5 is a like transverse section on line ffy-y., `lig. 2,:s'o'rne of the parts being broken away.. Fig. 6 is an en `view o r elevation of the ina'- chine, looking inthe direction of the arrow,

Fig.' 1, some of the parts being broken awa to show devices beyond. Big. 7 is a detall view of a inodied form of means for giving the face or front tool holder a transverse tilting movement; Fig. 8 is a det-ail of the end tool holderto be described; and Big 9 is a plan viewoof alathe embodying the invention.

The lathe-bed,4 1, may be of any usual v'or desired form, preferably sup ort'ed upon legs or standards 2 and mounted) thereon in suitable manner is the head stock 3 and tail stock- 4, `the former of which carries lthe latheI spindle 5. head stock 3 is t Y y with a pulley 7 whic'h, -by means of belt8, may be driven from any suitable source of power. The driving shaft 6 is provided with a worm 9, which meshes into `an annular worm wheel 10 detachably secured to a iiange 10 on the lathe s indle, see Fig, said worm and worm w-eel bei preferably interchangeable with other orms of such parts reduction between the driving shaft and lathe s indle, .as will be readily understood Mounted in suita bearings 1 1 and substantially central of the lathe-bed is the main or front feed spindle 12 which is capable of endwise .movement by means to be described, Loosely disposed upon the front feed spindle 12 is the sleeve 13, which is contained in suitable bearings 14 of the lathebed, said sleeve having secured thereto the worm-wheel 15 to which is connected the cam cylinder 16.` The connection between the cam cylinder 16 and wormewheel 15 may be of any usual or desired characterJ but connection 1 7,0

since the dire connection wi serve to tightly join Athe parts y separationwhen desired. Secured to the cam-drum cylinder by one s `lled in the ar'tf b e Dis osed transversely of the l e driving shaft 6 provided 16 is vthe outwardly extended skeleton frame 160- having a bearing 161 which serves as a mutual support for the cam cylinder and front feedspindle 12, and is of importance in operating on long work.

Disposed transversely of the lathe-bed in suitable bearings is the shaft 18 provided with a worm 19 in driving connection with the worm-wheel 15, as best shown inAFigs. 3 and 6. Loosely mounted on the shaft 18 is the pulley 20 driven from a small pulley 21 on the driving shaft 6 by means of a belt 22, or"other suitable power transmitting means, and secured to pulley 20,\ see Fig. 6, is a small gear 23 thus the pulley 20 and gear 23 rotate independently of the shaft 18. In order, however, to drive the shaft 18 and its worm 19 from the pulley 2O and gear 23 a train of reducing gearing is provided, as best vindicated in Figs. 1, 2 and 6.

ll/leshing with the small gear 23, Fig. 6, is the gear 24, Fig.' 1, iixed to a shaft 25 extending transversely of` the lathe-bed, and

upon the opposite end of this shaft 25 is a small gear 26, Fig. 2, forming one of a system of change gears'whereby variable speeds may be obtained. The small gear 26 meshes with gear 27, the hub of which carries gear 28.

This lattergear meshes with gear 29, the hub of which is also provided with a gear 30'.

Said gear 30 meshes with thoe pinion 30',

which also meshes with an intermediate gear 31, which in turn meshes with gear 32 mounted loosely upon shaft 18. Keyed to shaft 1 8 is a disk 33 (Fig. 6) provided with a plurality of cam-shaped slots in which are located rollers, the same constituting a clutch illustrated in dotted lines, (Fig. 2). By means of this arrangement, shaft 18 and its Worm 19 are given operative movement under normal Working conditions. I

From., the construction thusfar described, it will be seen that the worm 19 and the in termeshing worm wheel 15 and connected cam drum or cylinder 16, are driven from the driving shaft through a system of reducing gearing, whereby the cam-drum is slowly rotated for a purpose that will hereinafter appear. While a particular system of reducin gearing and change gears have been descri ed as one embodiment of this feature of the lathe structure, it is to be understood, of course, thatthe invention itself is not circumscribed by these details.

The interior surface of the cam drum 16 is adapted to receive and have securedthereto in a detachable manner, as by the pins or screw bolts 34, cam plates 35, between which may be formed a cam groove 36 of a' shape or form to suit the character of the work to be done bythe facing tools, as will presently appear.Y Secured to the main or`front fed spindle 12 is an arm or dog 37 having a roller 38 which travels in they cam groove 36 as the cam drum revolves, wherebyv the said feed spindle is gradually moved longitudinally.

Secured to the feed spindle 12 so as to move longitudinally therewith is the front feed carriage 39, Figs. 3 and 4, to which is secured the tool holder 40, said carriage eX- tending to the fron-t of the lathe-bed and there being provided with` a wedge-shaped resting edge41, Fig. 1. This resting edge is preferably mounted loosely so as to slide at one end on a pin or rod 42 Isecured in the ears 43 of the carriage, that end of the pin or rod nearer the head stock being higher than the other end, as indicated in Fig. 1. When the cutting tool is in operative position with re.

lation to the work, it and the resting edge 41, are substantially the same distance from the center of the feed spindle 12, so that when the carriage 39 is tilted by means of the plate 44 is made to suit the character of work to be done by the front cutting tool and its surface receives the full thrust of said tool during its cutting operation. For example, if the work requires the turning 0H of the crown face of a pulley, where the crown bellies outward, the former plate 44 is 'shaped with downward converging side portions as illustrated in Fig. 1 thus allowing the resting edge 41 to gradually drop the cutting edges of the tools as the carriage moves along the surface t0 be cut. In this way any curved or oblique surface or surfaces may be formed by a complementary form given to the surface of the former plate. In this operation `of the device, that is, in cutting a surface that requires the carriage to move along the surface to be cut, the former carrier 46 is held stationary by means of the bolts 49 which pass through slo'ts 5() in the bearing 45 to the right in Fig. 1. In the action of the device, asthus described, the front spindle 12 is moved by the cams of the cam drum and the carriage 39 is correspondingly moved. At the beginning of the operation the resting edge 41 standsupon the cut away portion 48 of the former plate 44, and as the carriage is fed' lonoitudinally of the machine towards the wor the edge 41 reaches the abrupt rise at the edge of the cut-away portion 48, and before mounting it, allows the carriage to continue its movement alone lintil the edge 41 has reached the ear 43 near the right hand end of the pin 42, whereu on the edge 41 is forced over the rise onto tfie forming surface pin 421the edgei41 the carriage-1a certainamount dueto the: inclination of'pin4'2,

=thus'-bringing thefcutting tools into lineifor cutting. 'Whe-nf the endfofthe' operation is Areachedf the resting edge 4l drofps into the cut away portion148lat the/letto -the'fomner plate, and on5 the return motion ali'dingaction takes place between" the resting-edgel41 A-andthepini/12 in the 'reverse direct-ion'from 'that 'described, thus lowering "the cutting toolsfrom the' work, 'by tion'o the stood. It

reason' ot the inclinapin 42, as will be 'readily'underwill' be observed thatthe spindle 12 oscillates with the tool holder'.) by reason of the latter being secured to the-fermelg--as 'heretofore described.

`Shoulda transverse movement of the iront cutting tools-be required 'withoutvafcorrespending longitudinal movement vas just described, thef ormercarrier f46 may beA rovided 'with an arm'or dog, which'lwilL be passed'through a slot'51 near thefleit of the ormer carrier, and said arm or'dog made toV 'engage a cam-slot or-'groove l52-formed by cam pieces 53, 53,l secured to. theexterior of f the cam-drum. 'At the same time, the bolts 49 will-be loosened or removed -and the endzwise 'movement of the front spindle 12 be arrested either by' loosening the arm37, Fig.

` 3, orproviding a circular pdrtion to the cam pieces 62, 62, 6o

verse cut b 'vided with tool holders 58,

groove 36. 'In thus making a direct transmeans of the front cutting tools, any desire :form of former late may be employed, as will be obvious, ut in practice, it -lsfound desirable in many lor spindle being free to be moved longitudinally and oscillated in said bearings and pro- 58, appro riately secured thereto. Projecting from t e back shaftor spindle 56 near one end thereoil is an arm or dog 59 carrying a roller 60 adapted to travel in the groove 61 formedl by cam detachably secured to the outer surface of the cam drum 16, Fig. 2, whereby 'under conditions to be described, longitudinal movement may be given the back shaft or spindle in a manner similar to that described for the iront feedspindle. Obviously, the cam pieces 62-621n1ay be acted on 'In' this'A slidingfmove? 'with respect to the back-shaft cases to provideA 4a simple wedge form of plate, such as shown `in Fig. 7 ,wherein theformer plate 54 is se- :to give such motions `to fthev haekszsh-aft 'or spindle ithat the respective stools :carried therebywill other precisely -thewforkrequiredi tobe done.

:Secured to the. lathe-'bed' below the back shaft' or spindle 56 .isa bracket .63.. vcarry-ingv a :horizontall cam 'plate .64,- 'preferably circular in shape ands provided on. .itszupperfsurface witha groove-'.65 whichimay be. straight or curved in formfbutwisfpreierably arranged diametrically of the cam plate 64. :The bracket '63. is preferabiyf formed lof two .similar arts, as shown iniF-ig..2, held to ether by Ya c amping bolt 66 whereby; uponf oosening .of the bolt 66,1the'camplate.64fmaybe 'rotated 4and give a suitable position to the work tobe performed-asfwill .presently appear. jSecuredvto thefback'shaft .or spindle 56 and 'depending therefromfis the'centrolling .arm f67,:said -arm being preferably connected to the back shaft orspindle 56 by means of a clampingv bolt 68, and its4 lower end being in engagement withA the groove .65. inthe cam :plate 64. The lower` end of= the controlling arm 67 may preferablybe provided'with al perform lndependentlyzof each roller 69 4in order.to-overcomeanyfriction .between the parts.

From the construction thus v'tar described orrspindle and its operating means, 'if the cam plate 64 be so-set that its groove 65 is parallel with the vback .shaft or spindleno rocking movement vwill be imparted to the back shaft or spindle as` it isl moved 'longitudinally by Ameans-of the groove 61 formed4 upon the cam drum, but if, on the other hand, it is set atan angle to said back shaft or splndle not-greater than 45,:then, as the back shaftor spindle is moved longitudinall by virtue of the cam groovel, the .contro ling arm 67 will travel in the groove 65 to cause the back shaft or spindle to move about its axis, thus imparting to the cutting tools carried by the holders 58 not only amovement longitudinally ofthe lathe-bed, but also la movement transversely thereof. Should the required lcutting angle of the tools upon the-edge of the work be .45 or more with relation to the back spindle, the rotary motion of the shaft 56 will predominate over the longitudinal motion, and if longitudinal motion were thus attempted to be given to the back spindle 56 through the arm 59 and cam groove, there might-be a binding action between the `end of the controlling. arm and the groove of the cam plate, to overcome which objection the following mechanism is provided. Secured 'lto the sleeve 1%, Fig. 3, on the worm Wheel 15 is a cam 70 loosely mounted upon the front spin.

dle 12, Figs. 2, 3 and 5, and detachably secured to the back spindle 56.is a cam-arm 71 which is adapted to bearnpon the ca'm 70 and passes through an opemng 72, Fig..2, in

the .lathe-bed for this purpose. 'To maintain lso ' main or front. spindle 12.

esoI

. longer.

paSSeS OVGI v ment of the slot the cam arm 71 in operative relation to the cam 7() a weight 73 isemployed, Figs. 2 and 4, which is connected to the controlling arm 67 by means of a flexible chain or cord 74 and a loose pulley 75. When the construction thus described is being employed the arm 59 on the back spindle 56 is removed or loosened so that it ha@ no effect' upon the longitudinal movement of the said spindle. When the periphery of the cam departs from the circle, a movement is imarted to the cam arm 71 to rotate the back s indie 56 about its axis and to move thereby t e controlling arm 67, the end of which is in the groove 65 of the cam plate 64, which 'is now adjusted to an angle of 45 or more with respect to the back spindle. From the construction thus far described, it will be apparent that as the cam arm 71 thus rocks the back spindle 56 the controlling arm 67 will cause a longitudinal movement of'said back spindle depending upon the angular arrange- 65 with respect to the axisof the said spindle. V If the tools carried by the holders .58 are to be moved directly transversely of the lathe-bed the groove 65 in the cam plate 64 would be adjusted at right angles to the axis of the back spindle 56, under which condition no longitudinal movement of the back spindle would take place.. Obviously, when theback spindle 56 is given its longitudinal movement by means of the arm or dog 59 and the cam groove 61 on the surface of the cam-drum 16, its rotative movement isimparted by means of the cam plate 64 and controlling arm 67, and in this case the cam arm 71 is loosened upon the back s indie 56 and held out of engagement with t .e cam 70. p On the other hand, when the rotative movement of the back spindle is imparted by means of the cam arm 71 and cam 70, its longitudinal movement is secured by means of the cam trolling arm 67 in which event, the arm or dog 59 is turned out of en agement with the cam groove 61. It is o vious, also, that many changes might be made in the details of the parts thus describedwith respect to the motions of the back spindle 56 without in any way departing from the scope of the invention.

By means of the construction hereinbefore described it is possible to perfrm simultaneously a number of operations upon the same blank with thetools controlled by the back spindle 56 and those controlled by the For instance, the front tools m-ay be giving roughing and finishing cuts over the crown surface of the belt ulley and at the' same time the tools of the ack spindle can be truing up and rounding off the edges, finishing the belt pulley in the otime that an ordinary lathe wou d take to do either operation that happened to be the The cycle of cutting operations thus plate 64 and consimultaneously performed by the front and back spindles and their connected tools is controlled from thesame cam-drum, upon the interior and exterior surfaces of which cam pieces may be secured in conformity with the character ofwork to be done, and

such cycle of operations areQcompleted and the tools returned to the startmg point during asingle rotation of the cam-drum. rlhus it is that the cam-drum is to be driven from the main driving shaft by a system of speed reducing gearing of the general character described. It is desirable, however, that upon the completion of the cycle of cutting operations, or it may be at other times, that the speed of the cam-drum be increased either to return the parts to the beginning of a cutting cycle or for other purposes, for which reasons the followingmeans may be employed as one type of such speed changing devices. Keyed to the end of shaft 18 is one member 76 of a clutch which is adapted to be moved into engagement with a complemental member 77 secured to the face of the pulley 20, which is loose on the shaft 18, a yoke 78 being provided to slide the clutch member 76 into and out of engagement with the member 77. Obviously when the clutch members are engaged, the shaft 18 and its worm 19 will be rotated at the relatively high speed of pulley 20, the ratchet` 33 connecting the reducing gear 32 to said shaft 18, permitting such movement. This change of speed may be done at any time by hand by means of a lever 79 on a shaft 80, to which the yoke 78 is secured.-

i Extending transversely of the lathe-bed is the pattern shaft 81 provided'with a beveled gear 82, meshing with a corresponding gear 83, Fig. 5, on the counter shaftf84 extending lon. itudinally of the lathe-bedfsaid countersha 't deriving motion from the worm 15.

through the sleeve 13 and inion 85 and the like pinion. 86 secured to t e counter-shaft, Fig. 3. Secured to the end of the pattern shaft 81, Figs. 1 and 5, is a disk 87 to which a series of pattern sectors 88 are detachably connected. An arm 89 secured to the shaft 80 is normally pressed with its end bearing against the pattern sectors 88. by means of a spring 90, one end of which is attached to the bracket 91 and the other end to an arm 92, Fig. 5, secured t the shaft 80, and so long, as a. continuous series of sectors are presented to the arm 89, the shaft 80 and consequently the yoke 78 will not be moved to throw the clutch members 76 and 77 into operative engagement. upon the disk 87 so that al vacant space 93 will be presentedo to the end of arm 89 upon the completion of a piece offwork, the clutch v By arranging the sectors 88A arts to reare unclutched, and' crease front.4 and' back .ep

soonas .thecuttingt'ools'have beenreturped. for the commencement of another. cut, v,the blanks lace. in theline of sectors'will have passed t enndof thearm 89 and it'will then ride .over-.the sectors again, ,thereby throwing out the highi speedV devices. members ,76 and 7 7 are clutchedftogetherthe worm isdriven at .the speed of the pulley 20', the rolls. in disks 33' rolling to the small diameter. of its .slots'and out of'contact with gear 82.. Therefore, `the speed can be usedat any time andthe slow speed becomes operative .the instant the members7'6' and 77 l Without clash or jar. In order that shaft 80 'may be turned'by the handdevice 79, even when the arm 89 is riding on the sectors 88, a stud 94 on the hub of arm 89engages a slot in the shaft 80, and a spring .9.5 isinterposed between and attached to the hubs of levers 79' 'and 89 tendingto force the two arms in opposite directions, Ofccurse, any usual and Well known devices may be used for this purpose. It will- .thus be seen that havingarranged the sectors to throw in thehighv speed devices on the-completion of a piece of. work, the cutting instrumentalities will'be returned to their position/ for anotherv cut, automatically, or, if desired at anytime, thiscan be. done by hand,

In finishing lcertain artilesit desirable that an end cut be'.A givenyandmeans are herein provided .for simultaneously effecting this as lthe front and'baeki cutting. devices are in operation, Aone form of such end cutvting devlces and the feed therefor beingA indicated in Figs. 3 ,and 8.

The counter shaft 8f4, driven from the worm 15 andy connected parts, as hereinbefore explained, extends longitudinally of the lathe-bed and-is carried in suitable bearings 96, 96, Fig. 3, and isprovided with apinion 97 which engages suitable teeth 98 formed in or upon a tail. drum '99. The said. drum 99 is mounted loosely u on thetail stock end of the front feed spin le 12. and is prevented from longitudinal movement by means of an arm 100, secured to the tail stock andhaving a part 101 embracing the front feed spindle, as will be seen most. clearly in Fig. 3. Secured to the surface of tail dru1n99 are suitable cam strips 102,. 102, forming. between them a. cam groove for a stud 103 connected to the tail`carriage104. The stud. 103 is preferably, though notof necessity, adjust* able longitudinally of the 'tail carnage-'by means of a screw 125, vsee Fig. .8, to allow! of hner. setting after the tool-holder 105 mounted on. the carriageA 104 hasr been clamped roughly in place. The toolholder 105may be secured Vto the carriage 104,111 any suitablemanner, as by bolts106', and

mQrethannnecuLter. 10Tmay 'he supported of" power thro the' Whenever. ugh

thereby if desiredglikewisathis form of tool Holdermayprovidasupportm fr'. the turning arbor. Thus Iit Wifi? bei: noted thatthe entirer'serieoftcutters are^moyed simultaneously; 1n' theuvcuttingd'operatfons,

andall' derivemotionfrom"thesinglersourc' camdrmn: and its; connected arts, Wlereby'thelseveral ting" opera onsare notoniy carried on at' one time, buteacllipconrp'letesits cycleio'f' action at substantially the same'rnoment and'. is then automatically' returned underh'igh" speed for the commencement of another cut,v it being un'derstoodhzhat,` in-caseoffthe tail or'end cuttingi. devices, this'is'xacco-Y li's'li'ed by suitable returning cams-securedto the' tail rdrum ifthe character ofthe end'cuttree qures it.

A cycle of operations having'fbeenpei' formed as explained. and the parts returned to their starting positionv it becomesdesirable to stop the machine to introduce a new'blank;

Mounted in suitable. bearingsconnectedto the lathe-bed 'and the floor beneath is'a stop rod 1509 carrying a stop arm'1'10`,,the endof which' travelsl in the groove 111 .formedfin the disk 87', a spring 112 normally tending to turn Ythe stop rod.109 to holdth'e endof the arm in said groove.. Adj'ustably ser' cured'in the groove 111 is a stop pin 113,` which is adapted to lift the arm 110', willen, by the rotation 'of the disk, itis brought into engagement withl the end of lsaid arm. Secured to the stopjrod 109' near its lewer end is a:4 catch arm 114, Fig. 6i, having a latch or catch adapted to engage. a foot lever 116 and hold the' same. in depressed positionso long as the end of stop arm 110 travels in the roove 111, but should the stop', arm be" met lgiythe stop vp in 113, it `will be pushed out# Walid against the tension of spring 112 there'- byturningthe stop rod. 109 andthe catch arm 114 secured to it and freeinggth'e foot lever 116 to the raising action of a spring 117, shown in dotted lines, Fig.,v 6. Connected to the foot lever 1 16 by means of'an arm 118 is an upright rod 119 leading toany usual form of power disconnectingvmeans, not necessary to illustrate,as it forms no part ofthe present invention andfis,n1ore over, wellknown vtothose skilled in. the art,

whereby, upon the upward movement of said i l rod .119 the drivingpoweris operatively disconnected from the machine. A' hand lever 1201's .connected to the stpp rod A1U9.Wh"e1eby it may beturnedbyhan and the machine stop edwhen desired. When'a .new blankhas.. '.eenput inv the machine, it isonly necessary tov depress the foot. lever 116,y thus throwing. in. the operative ower. The various stopping,v starting. an speed controlling means are preferably arranged'in close proximity to eachother so. that the operative. may not have to. move-.fom" an advantageous.. positionior Work inspection holder carried thereby, connections between to manually control the entire operation'of I the machine.

In the form of machine hereinbefore described, particular attention has been given the construction adapted to finish a pulley by facing it, beveling its edges and end cutting it, so that the article comes from the machine in completed condition or substantially so after one cycle of the machine operation; but it is to be understood that the invention is applicable to a/large variety of work, in fact, one'or more of the cutting or other mechanism may be rendered inactive in working upon'some varieties of articles, or changes may be made in the details of arts or their arrangements and relation witl 1in the prov-v ince of the present invention, which is more definitely pointed out inap ropriatecscope by the claims hereunto attached.

Having thus described my invention, what I claim and desire to secure by Letters Patent 1s: u

1. In a lathe, a cam-drum having cam surfaces on its interior and exterior surfaces, means for revolvinglsaid drum, a plurality of feed spindles, tool olders connected to said spindles, and operative connections between t e cam surfacesof said drum and said spindles for causing` the tool holders to be simultaneously operated. j

2. In a lathe, a feed spindle carrying a tool holder, a cam-drum concentrically arranged with respect to said feed s indle, cam plates secured to the inner su 'ace of said camdrum, an arm or dog connected to the feed spindle and engaging the cam plates on said rum and means or revolving said drum.

3. In a lathe, a cam-drum, means for rotatino said drum, a back feed spindle, a tool hoder carried thereby, connections between the drum and spindle for moving the latter longitudinally, and means for moving tne pindle about its axis as it is moved longitumallv.

4. In a lathe, a cam-drum, means for rotatin said drum, a back feed spindle, a tool hollder carried thereby, connections between the drum and spindle for moving the latter lon itudinally, a controlling argn secured to sai spindle, and a cam plate for acting upon said controlling arm to turn the spindle about its axis as it is moved longitudinally.

. 5. In a lathe, a cam drum, means for rotating said drum, a back feed spindle, a tool the spindle and cam drum for moving the former longitudinally, a cam plate, means for angularly adjusting said cam late, a controlling arm secured to the back eed spindle and connections between the controlling arm and cam plate for turning the spindle as it is moved longitudinally.

6. Inl a lathe, a longitudinally movable back feed spindle', a controlling arm secured thereto, a cam plate having a groove in which the end of said arm travels, a cam, means for rotating it,and connectionsbe'-` tween the spindle and cam for oscillating the former fromthe latter.

7. In a lathe,l a longitudinally movable back feed spindle, a. controlling arm secured thereto, a cam plate having a groove in which` the end of said arm travels, means for adjustin the cam 'i late to vary the angular.

relation etween t e groove and the axis ofv the feed spindle, a cam, means for rotatin it, and connections between the spindle an cam for oscillating the former from the latter.- S. In alathe, the combination of a backfeed spindle, a cam drum adapted to. move said spindle longitudinally, a'cam rotatable in a plane at right angles to said spindle 1 adapted to oscillate the same, a controlling arm secured to the back-feed spindle, an angularly adjustable cam plate engaged by sald arm, a releasable dog or arm, and a re' leasable cam arm for engagingthe cam-V drum and cam respectively according to the angle of adjustment of the cam-plate.l

\ 9. In a lathe, a driving shaft, a cam drum or cylinder driven from said shaft, an ou t wardly projecting bearing secured to said drum or cylinder, cams carried by said drum or cylinder, a feed spindle passing centrally through said drum or cylinder and movable longitudinally thereof through said outwardly extended bearing, and operating connections between said spindle and the cams on said drum or cylinder.

10. In a lathe, the combination of a front feed spindle and backfeed spindle, a single cam drum for simultaneously operating said spindles, an end feed carriage, a' cam drum for moving said carriage longitudinally of the lathe bed, a single drivin shaft and suitable connections between sai driving shaft and the aforesaid drums, whereby the latter are simultaneously driven by the former through a com lete cycle of cutting operations.

11. n a lathe, a feed spindle, a toolcarria e mounted thereon and-movable therewit a cam-drum, connections between said drum and said spindle for moving the latter longitudinally ofthe lathe-bed, and a former p late directly engaging the aforesaid tool-carrlage.

12. In a lathe, a front-feed spindle, a toolcarria e thereon and movable therewith,- a cam rum, connections between said drum and said spindle for moving the latter longitudinally of the lathe-bed, and a movable former-plate directly engaging the aforesaid tool-carriage.

13. In a lathe, a front-feed spindle, a toolcarriage mounted thereon and movable therewith, a cam-drum, connections between said drum and said spindle for moving the latter longitudinally of the lathe bed, a former-plate, connections between the said plate and the aforesaid drum, whereby said nally ofthe lathe steam@ gate neve-df 10u-gateways# melanie-:ff

14. In a lathe, a'front feed spindle, a back i feed spindle, al cam" drum provided' with means for imparting "a 'long gi'tudinal move? ment toboth spindles, and means for-oscil`4 lating both-spindles during such longitudinal movement. a

15. In a lat'he,.a back feed spindle, a cam drum, connections between "said drum and spindle for moving said spindle longitudiindependent of said cam-plate; separate con# nections between said cam plate and-said inendent cam res ectivfely and theafore said back-'feed spin le.

16. In a lathe, a back feed spindle, a cam plate adapted to be held stationary,'connec tions between said cam plate and said spindle for moving said spindle longitudinally of the lathe bed, and a 'cam movable by the operationof the lathe and cnnections-u between said cam and said spindle.

drum, a camplate, releasable connections between said plate and said spindle and releas'- v able connections between said drum and said spindle, a rotary cam and connections be-- tween said rotary cam and said spindle for oscillatingsaid spindle during its longitudinal movement..

18. In a lathe, a back feed spindle, a 'cam drum, detachable connections between said drum and spindle for moving the spindle longitudinally of the lathe bed, a cam plate ada ted to impart either a longitudinal or an osci latory movement to said spindle, detachable connections between said spindle and said cam plate, a cam independent of said cam plate and detachable connections between said independent cam and said back bed, a cam plate and a cam" cil-latedfdun A'its'v longitudinalffmevemenai:

2i: Ina lat ei-,1a spindle, a 'tol carriageronr said spindle, a cam drum, both 'thegexte'rior and the interirsurfaces'of sai'ddi'un'i'," a drive -shaft, 'connections-'beitween said drive shaft and saiddrum, where:

bythe-'dru'm' is driven from thef shaft, at former plate, connections-between said spin-A :2

dle'and said former plate -whereby said spi'ndle `is oscillated and connectionsbetween the' l interior 'cam patches and exterior cam patches of said cam drum and the said former plate and said spindlerespectively, whereby. i l

said spindle and said former plate are moved longitudinally.

22; In a lathe, a spindle, a tool carriage on said spindle, v a cam drum, cam patches. on

both the exterior and the' interior surface of 85 said drum, a vdrive shaft, connections between said drive shaft and said drum, wheref by the drum is driven from the shaft, aformer P ate, connections. between said vspindle vand said former plate whereby said spindle isoscillated and releasable connections between 17. In a lathe, a back feed spindle, a cam said spindle and said former plate are moved longitudinally, either separately and independently or simultaneously as desired.

thereon, a cam drum, a drive shaft, `connec tions between said drum and late, releasable connections betweensaid ormer late and said spindle respectively and said)` drum whereby said elements may be driven from said drum, either separately cam patches 0117.70"4

23. In -a lathe, a spindle,a tool carriage v l shaft whereby 100 the drum is driven from the shaft, a former feed spindle.

19. In a lathe, a spindle, a tool carriage mounted thereon, a cam drum, a drive shaft, connections between said drum and said shaft whereby the @um is driven from the shaft, connections between`the` aforesaid spindle and said drum for moving-said spindle longitudinally of the lathe bed, a former. plate and connections between said former plate and the aforesaid tool carriage whereby said tool carriage is oscillated during its longitudinal movement.`

20. In a lathe, a spindle, a tool carriage' thereon, a cam drum', a drive shaft, connections between said drum and shaft whereby the drum is driven from the shaft, a former plate,` releasable connections between said former plate and said spindle respectively and said drum, whereby said elements may bev longitudinally Ii'ovable from said drum` 65 either separately or simultaneously, and con-s said former plate in a stationary position l-Io when the same is disconnected from the aforesaid camv drum;

24. In a lathe, a s indle, a tool carriage mounted thereon andl re'e lto move vertically, means for impartig a longitudinal move- 1115 ment to said spin e,-' a resting edge 'supported by' said carriage and free to move lat'- erally, a former plate arranged to engage said resting edge, means for holding said resting edge' temporarily at rest, and means 12a engaged by said resting edge f or raising andv lowering said carriage while said resting edge is tem orarilyl at rest.

25. a lathe, a s indle, a'tool carriage mounted thereon and ree to move vertically, means for impartig a longitudinal movevment `to said spin e, a resting edge sup-V ported by said carriage and free-to move laterally, a former plate arranged to enga e said restingedge, andprovided Witlishou "130 ders arranged to hold said resting edge temporarily at rest, and means en aged by said resting edge for raising and owering said carriage while said ,resting edge is temporarily at rest. A

26. In a lathe, a s indle, a tool arriage mounted thereon and ree to move verically, means for imparting a longitudinal movement to said spindle, an inclined pin su ported by said carriage, a laterally movable resting edge mounted on said pin, a former plate arranged to engage said resting edge,

and means for temporarily arresting the movement of said resting edge. l

27. In a lathe, a spindle, an oscillating tool carriage thereon, a former plate movable beneath said carriage and adapted to oscillate the same, means for simultaneously moving both said tool-carriage and said former-plate longitudinally of the lathe-bed in the same direction at relatively different speeds and a member carried by the said carnage and adapted to be engaged by said former plate to lift the aforesaid tool-carriage onto the said former-plate.

28. In a lathe, a spindle, a tool-carriage thereon, means to move said spindle and tool-carriage longitudinally of the lathe-bed, a former-p ate, a wedging element below said tool-carriage, a shoulder on the aforesaid former-plate, with which said wedging element is adapted to engage and through such engagement to'be temporarily arrested while the tool-carriage continues its longitudinal movement, thereby forcing the tool-carriage over the wedging element and raising it onto the aforesaid former-plate.

29. In a lathe, a spindle, a tool-carriage thereon and movable therewith, means to move' sald spindle and carriage longitudinally ofthe lathe-bed, a former-plate, an inclined pin mounted in the ,under face of the aforesald carriage, a wedging element movably mounted on said pin, a shoulder on the aforesaid former plate, by which said wedging element is adapted to be temporarily arrested' during the continued longitudinal movement of said tool-carriage.

30. In a lathe, a spindle, a tool-carriage on sald spindle and movable therewith, means to move said spindle and tool-carriage longltudlnally of the lathe-bed, a wedging element beneath said carriage, loosely mounted on an lnclined pin, said inclined in being attached to the aforesaid too carriage, a formerlate, and a shoulder on said formerplate a apted to engage the aforesaid wedglng member and temporarily arrest the same durlng ,the longitudinal movement of the tooll carriage to thereby raise said carriage onto saidplate by the coperation koflsai'd wedging element and said inclined pin.

31.'In a lathe, a feed s indle, a tool-carnage on said spindle an v movable therewith, a sleeve on one end of said spindle, two

cam drums one secured to said sleeve and the other concentric with the opposite end of said spindle respectively, a drive shaft, connections between 'said drive shaft and said drums respectively whereby said drums are driven from said shaft, an end feed carriage, connections between one of said drums and said spindle and the other of said drums and the aforesaid end feed carriage whereby said spindle and said end feed carriage are moved lon itudinally.

32. In aathe, a front feed spindle, and an end feed carriage, two cam drums', a drive shaft, connections between each of said drums and said drive shaft whereby said drums are driven from said shaft, detachable connections between said drums and said front feed spindle and said end feed carriage res ectively whereby said spindle and sald en feed carriage may begiven either simultaneous longitudinal movement or separate longitudinal movement.

33. In a lathe, a front feed spindle, a tool carriage thereon, an end feed carriage, two

Acam drums, connections between said drums and said front feed spindle and said end feed carriage res ectively whereby said s indle and said en feed carriage are moved ongitudinally, a drive slgaft, connections between one of said drums and said shaft for driving said drum, a counter shaft and connections between said counter-shaft and the other of said; drums and the aforesaid drive shaft respectively whereby the last-named drum is riven by the drive shaft.

34. In a lathe, a front feed spindle, two cam drums concentric therewith, an end feed carriage, connections between one of said drums and said spindle and the other of 4said drums and said end feed carriage respectivel for moving said spindle and said end lfee carriage longitudlnally, a drive shaft, connections between said drive shaft and one of said drums, a counter-shaft, 'connections between said counter-shaft and the other of said drums and said drive shaft re-' and said front and back feed spindle respectively whereby said spindles are moved longitudinally, a second cam drum, connections between said druni and the aforesaid end feed carriage whereby said carriage is moved longitudinall a drive shaft and connections between saidyshaftand the said drums respectively whereby said drums and their connected elements are operated simultaneousl and in unison.

36. n a lathe, a front feed spindle, a tool carriage thereon, a back feed spindle, a tool carriage thereon, a` cam drum, detachablel connections between said drum and each of said spindles res ectively, a second cam drum, an end fee carriage, detachable connections between said drinn and carriage, a drive shaft, and connections between said drive shaft and each of said drums respectively whereby any one of said tool carriages may be moved longitudinally independently of the remaining tool carriages or any two or all of said tool carriages may be given simultaneous longitudinal movement.

37. In a lathe, a front feed spindle, a back feed spindle, a tool carriage on each of said spindles, a cam drum, connections between said front feed spindle and said cam drum whereby said front feed spindle is moved longitudinally, a sleove secured to the drum in which said front feed spindle is 'ournaled and slidable, a cam disk on said sleeve and connections between the aforesaid back feed spindle and said cam disk whereby said back feed spindle is oscillated.

38. In a lathe, a back feed spindle, a tool carriage thereon., a front feed spindle, a tool carriage thereon, a cam drum, connections between said drum and said spindles res ectively whereby said spindles are moved ongitudinall a sleeve secured to the drum in which sait spindle is journaled and slidable, a cam disk on said sleeve and connections between said disk and said back feed s indle whereby said back feed spindle is osci ated.

39. In a lathe, a back feed spindle, a tool carriage thereon, a front feed spindle, a tool carriage thereon, a cam drum, connections between said drum and said spindles res ectively whereby said spindles are moved on- ;ritudinally, a sleeve securedrto the drum in which said spindle is journaled and slidable,

a cam disk detachably secured on said sleeve and connections between said disk and said back feed spindle whereby said back feed spindle is oscillated.

40. In a lathe; a front feed s indle, a toolcarria e thereon and movable t. erewith, and an en feed carriage, a cam drum, connections between said cam drum and said front feed spindle whereby said s indle is moved lonvitudinally, a sleeve free y rotatable on said spindle and secured to said cam drum, a gear on said sleeve, a second cam drum, a counter-shaft and connections between said counter-shaft and said gear and said second drum respectivel whereby said second drum and its connecte carriage are driven.

41. In a lathe, a feed spindle, a cam drum, connections between said spindle and said drum whereby the latter may be moved longitudinally from the former, a sleeve freely rotatable on said spindle and secured to the cam drum, a counter-shaft, connections between said counter-shaft and said rotatable sleeve whereby said counter-shaft is driven, a pattern shaft, connections between. said pattern shaft and said counter-shaft for driving the former, a pattern plate, on said pattern shaft, an automatic speed-@hangin device and connections between said ee changing device and said pattern -1 p ate, whereby said speed-changing device 1s operated at regular redetermined intervals.`

In testimony 'w ereof I affix my signature in presence of two witnesses.

RIMMON FAY.

Witnesses A. SCHROEDER, B. G. ELLIOTT. 

